Timothy Jordan (center), senior developer advocate at Google for Project Glass, speaks to Developing for Glass session attendees during Google I/O 2013 at Moscone West on Thursday, May 16, 2013 in San Francisco, Calif.

Brian Murphy, vice president of engineering New York Times is seen wearing his Google Glass during Google I/O 2013 at Moscone West on Thursday, May 16, 2013 in San Francisco, Calif.

Brian Murphy, vice president of engineering New York Times is seen...

Brian Murphy, vice president of engineering New York Times is seen... Photo-4650132.62722 - SFGate

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Jacky Cheung, Google software engineer, displays the NOW card on a pair of Google Glass at the Google Glass booth during Google I/O 2013 at Moscone West on Thursday, May 16, 2013 in San Francisco, Calif.

Audrey Lin (center), Google software engineer, wears a pair of Google Glass, while working at the Google Glass booth during Google I/O 2013 at Moscone West on Thursday, May 16, 2013 in San Francisco, Calif.